After officials repeatedly dismissed claims that Flint’s water was making people sick, residents took action. Here’s how the lead contamination crisis unfolded—and what we can learn from it.

Drought affects more people globally than any other natural disaster. Here’s what causes these prolonged dry spells and how we can mitigate their impact.

Here’s what you need to know about energy efficiency and how you can help save the environment—and money—at the same time.

Mining, drilling, and burning dirty energy are harming the environment and our health. Here’s everything you need to know about fossil fuels, and why we need to embrace a clean energy future.

The “permanently” frozen earth at our planet’s poles and in other cold climes is thawing, with big consequences to our climate, ecosystems, and health.

Wind and solar are powering a clean energy revolution. Here’s what you need to know about renewables and how you can help make an impact at home.

Our rivers, reservoirs, lakes, and seas are drowning in chemicals, waste, plastic, and other pollutants. Here’s why―and what you can do to help.

We’re drowning marine ecosystems in trash, noise, oil, and carbon emissions.

Forests are among our greatest allies in the global warming fight. Let’s protect them so they can protect us.

Everything you need to know in order to fill a glass from your faucet with confidence.